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dc.contributor.authorSamsonova, Zhanna*
dc.contributor.authorKartashov, Daniil*
dc.contributor.authorSpielmann, Christian*
dc.contributor.authorBodrov, Sergey*
dc.contributor.authorMurzanev, Aleksey*
dc.contributor.authorJukna, Vytautas*
dc.contributor.authorPetrarca, Massimo*
dc.contributor.authorCouairon, Arnaud*
dc.contributor.authorPolynkin, Pavel*
dc.date.accessioned2018-08-15T23:15:26Z
dc.date.available2018-08-15T23:15:26Z
dc.date.issued2018-06-20
dc.identifier.citationSamsonova, Z., Kartashov, D., Spielmann, C., Bodrov, S., Murzanev, A., Jukna, V., ... & Polynkin, P. (2018). Measurements of fluence profiles in femtosecond laser sparks and superfilaments in air. Physical Review A, 97(6), 063841. https://doi.org/10.1103/PhysRevA.97.063841en_US
dc.identifier.issn2469-9926
dc.identifier.issn2469-9934
dc.identifier.doi10.1103/PhysRevA.97.063841
dc.identifier.urihttp://hdl.handle.net/10150/628542
dc.description.abstractWe investigate the nonlinear propagation of multiterawatt femtosecond laser pulses at 800 nm wavelength in air, under different external focusing conditions. We profile the laser beam in the vicinity of the nonlinear focus using a technique based on the dependence of the single-shot ablation threshold for gold on the angle of incidence of the laser beam on the sample. Under very tight focusing conditions (f number similar to 15) we observe the propagation regime reminiscent of the nanosecond optical breakdown. No clear individual filaments are formed across the beam, and the estimated peak intensity surges to at least 200 TW/cm(2). As the external focusing is loosened to f number similar to 125, we observe the transition to the multifilamentation regime. Distinct individual filaments are formed before the linear focus while the peak intensity reaches similar to 80 TW/cm(2). Once formed, the filaments do not coalesce into a single or few superfilaments as they pass through the focus zone. Our experimental observations are supported by numerical simulations.en_US
dc.description.sponsorshipU.S. Air Force Office of Scientific Research under MURI [FA9550-16-1-0013]; Laserlab-Europe Project [HIJ-FSU002344]; Friedrich-Schiller-Universitat Jena; University of Arizonaen_US
dc.language.isoenen_US
dc.publisherAMER PHYSICAL SOCen_US
dc.relation.urlhttps://link.aps.org/doi/10.1103/PhysRevA.97.063841en_US
dc.rights©2018 American Physical Societyen_US
dc.titleMeasurements of fluence profiles in femtosecond laser sparks and superfilaments in airen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Coll Opt Scien_US
dc.identifier.journalPHYSICAL REVIEW Aen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitlePhysical Review A
dc.source.volume97
dc.source.issue6
refterms.dateFOA2018-08-15T23:15:27Z


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